Season (Adult / Immature):
National Status: Local
Local Status: Rare and very local resident.
Local Record: Grade 4 See here for explanation
Flight time: Apr-early May.
Foodplant: Hazel, Silver and Downy Birch.
|Year first recorded||2002||1859||1848||2008|
|Year last recorded||2002||2002||2014||2008|
|Number of records||1||3||17||1|
|Number of individuals||6||2||175||0|
For the county, we have a total of 22 records from 20 sites. First recorded in 1848.
Sutton & Beaumont, 1989: Rather local and seldom common, recorded from vice-counties 61 to 64. Porritt (1907) gave it as 'common and widely distributed' but this does not seem to be the case now.
2013 (CHF): Local in the county with most records in the south. The majority of records are of larval cut-outs on birch leaves though this species also mines leaves of hornbeam, hazel, apple and sometimes other species. The larva starts making a short corridor which is followed and mostly overrun but a 4-5mm circular blotch. Often several mines are found in one leaf. An excision is made the same size as the blotch and the larva drops to the ground. Adults are similar to Incurvaria masculella but the forewing is a greyish brown and the head is also greyish-brown unlike the yellowish or reddish-brown head of masculella.